[alsa-devel] [PATCH v2] sound: usb: mixer: increase control transfer timeout

[Jassi Brar]

On Mon, Aug 29, 2011 at 6:30 PM, Felipe Balbi <balbi at ti.com> wrote:
> Hi,
>
> On Mon, Aug 29, 2011 at 06:07:30PM +0530, Jassi Brar wrote:
>> On Mon, Aug 29, 2011 at 6:01 PM, Felipe Balbi <balbi at ti.com> wrote:
>> > 100ms might not be enough for slower devices. Increasing
>> > timeout to 1000ms doesn't seem like overkill.
>> >
>> > Signed-off-by: Felipe Balbi <balbi at ti.com>
>> > ---
>> >
>> > Changes since v1:
>> >  . Increase all 100ms timeout to 1000ms
>> >
>> >  sound/usb/mixer.c        |    4 ++--
>> >  sound/usb/mixer_quirks.c |   10 +++++-----
>> >  2 files changed, 7 insertions(+), 7 deletions(-)
>> >
>> > diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
>> > index cdd19d7..1c9d443 100644
>> > --- a/sound/usb/mixer.c
>> > +++ b/sound/usb/mixer.c
>> > @@ -296,7 +296,7 @@ static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request, int v
>> >                if (snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), request,
>> >                                    USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
>> >                                    validx, snd_usb_ctrl_intf(chip) | (cval->id << 8),
>> > -                                   buf, val_len, 100) >= val_len) {
>> > +                                   buf, val_len, 1000) >= val_len) {
>> >                        *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len));
>> >                        snd_usb_autosuspend(cval->mixer->chip);
>> >                        return 0;
>> > @@ -445,7 +445,7 @@ int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
>> >                                    usb_sndctrlpipe(chip->dev, 0), request,
>> >                                    USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
>> >                                    validx, snd_usb_ctrl_intf(chip) | (cval->id << 8),
>> > -                                   buf, val_len, 100) >= 0) {
>> > +                                   buf, val_len, 1000) >= 0) {
>> >                        snd_usb_autosuspend(chip);
>> >                        return 0;
>> >                }
>> > diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
>> > index 3d0f487..7c41399 100644
>> > --- a/sound/usb/mixer_quirks.c
>> > +++ b/sound/usb/mixer_quirks.c
>> > @@ -190,18 +190,18 @@ static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol, struct snd_ctl_e
>> >                err = snd_usb_ctl_msg(mixer->chip->dev,
>> >                              usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
>> >                              USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
>> > -                             !value, 0, NULL, 0, 100);
>> > +                             !value, 0, NULL, 0, 1000);
>> >        /* USB X-Fi S51 Pro */
>> >        if (mixer->chip->usb_id == USB_ID(0x041e, 0x30df))
>> >                err = snd_usb_ctl_msg(mixer->chip->dev,
>> >                              usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
>> >                              USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
>> > -                             !value, 0, NULL, 0, 100);
>> > +                             !value, 0, NULL, 0, 1000);
>> >        else
>> >                err = snd_usb_ctl_msg(mixer->chip->dev,
>> >                              usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
>> >                              USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
>> > -                             value, index + 2, NULL, 0, 100);
>> > +                             value, index + 2, NULL, 0, 1000);
>> >        if (err < 0)
>> >                return err;
>> >        mixer->audigy2nx_leds[index] = value;
>> > @@ -299,7 +299,7 @@ static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
>> >                                      usb_rcvctrlpipe(mixer->chip->dev, 0),
>> >                                      UAC_GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
>> >                                      USB_RECIP_INTERFACE, 0,
>> > -                                     jacks[i].unitid << 8, buf, 3, 100);
>> > +                                     jacks[i].unitid << 8, buf, 3, 1000);
>> >                if (err == 3 && (buf[0] == 3 || buf[0] == 6))
>> >                        snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
>> >                else
>> > @@ -332,7 +332,7 @@ static int snd_xonar_u1_switch_put(struct snd_kcontrol *kcontrol,
>> >        err = snd_usb_ctl_msg(mixer->chip->dev,
>> >                              usb_sndctrlpipe(mixer->chip->dev, 0), 0x08,
>> >                              USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
>> > -                             50, 0, &new_status, 1, 100);
>> > +                             50, 0, &new_status, 1, 1000);
>>
>> How about also converting to use a local define for timeout value ?
>
> should it be part of another patch ? The current code has no defines at
> all and $SUBJECT is just changing what's currently there to another
> value.

Can't speak for maintainers, but personally I'd prefer a single patch with two
points in changelog. The change is trivial enough.